2145989974 has 8 divisors (see below), whose sum is σ = 3229270200. Its totient is φ = 1069566576.

The previous prime is 2145989971. The next prime is 2145989977. The reversal of 2145989974 is 4799895412.

It is an interprime number because it is at equal distance from previous prime (2145989971) and next prime (2145989977).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145989971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1713424 + ... + 1714675.

It is an arithmetic number, because the mean of its divisors is an integer number (403658775).

Almost surely, 2^2145989974 is an apocalyptic number.

2145989974 is a deficient number, since it is larger than the sum of its proper divisors (1083280226).

2145989974 is a wasteful number, since it uses less digits than its factorization.

2145989974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3428414.

The product of its digits is 6531840, while the sum is 58.

The square root of 2145989974 is about 46324.8310736262. The cubic root of 2145989974 is about 1289.8599639668.

The spelling of 2145989974 in words is "two billion, one hundred forty-five million, nine hundred eighty-nine thousand, nine hundred seventy-four".